{"description":"ITC Advent Calendar \uff17\u65e5\u76ee. \u4eca\u65e5\u306fDES\u306eIP\u3068IP-1\u306b\u3064\u3044\u3066\u3067\u3059. \u8ab0\u3082\u8208\u5473\u306a\u3044\u3068\u304b\u77e5\u3089\u306d\u30fc\u3067\u3059. IP IP(Initial permutation, \u521d\u671f\u8ee2\u7f6e)\u3068\u306f, \u5165\u529b\u3055\u308c\u305f64bit\u306e\u5e73\u6587\u306b\u5bfe\u3057\u3066\u6700\u521d\u306b\u884c\u308f\u308c\u308b\u8ee2\u7f6e\u51e6\u7406\u3067\u3042\u308b. IP\u306b\u306f\u4ee5\u4e0b\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u7528\u3044\u308b. \u4f8b\u3048\u3070, \u5165\u529b\u3055\u308c\u305f64bit\u306e\u5e73\u6587\u306e58bit\u76ee\u304c\uff11bit\u76ee\u306b\u8ee2\u7f6e\u3055\u308c\u308b. 58 50 42 34 26 18 10 2 60 52 44 36 28 20 12 4 62 54 46 38 30 22 14 6 64 56 48 40 32 24 16 8 57 49 41 33 25 17 9 \u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkazukichi.hatenablog.jp%2Fentry%2F2017%2F12%2F07%2F025002\" title=\" [\u6697\u53f7] IP\u3068IP^-1 - \u65b0\u3057\u3044\u30d5\u30a9\u30eb\u30c0\u30fc\uff08\uff11\uff09\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://kazukichi.hatenablog.jp/","url":"https://kazukichi.hatenablog.jp/entry/2017/12/07/025002","version":"1.0","published":"2017-12-07 02:50:02","author_name":"Q_tyokinuhata","height":"190","width":"100%","categories":["\u6697\u53f7"],"provider_name":"Hatena Blog","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/Q/Q_tyokinuhata/20171206/20171206161413.png","author_url":"https://blog.hatena.ne.jp/Q_tyokinuhata/","title":" [\u6697\u53f7] IP\u3068IP^-1","blog_title":"\u65b0\u3057\u3044\u30d5\u30a9\u30eb\u30c0\u30fc\uff08\uff11\uff09","provider_url":"https://hatena.blog","type":"rich"}